Dynamic strain loading of cubic to tetragonal martensites

摘要: Abstract We present three-dimensional simulations of the microstructure and mechanical response shape memory alloys undergoing cubic to tetragonal transitions, using FePd as an example. The are based on a nonlinear elastic free-energy in terms appropriate strain fields. dynamics is simulated by force balance equations for displacement fields with damping term derived from dissipation function. Stress–strain properties pseudoelastic well regime investigated loading. also study effects defect-induced heterogeneous nucleation motion twin boundaries during deformation. Thus, we probe influence investigate how stress–strain behavior changes function rate.